Type-writing machine.



PATENT'EDAUGJG, 196a.

No. 896,707.. B. A; moons,

TYPE WRITING mcnmn.

4 sung-Inst 1.

APPLIOATI OI FILED 111.4, 1905.

INVENTDH.

\A/ITNESEES.

no; a9s 1d7. PATBNTED AUG. 25, 1908.

B. A. BROOKS.

TYPE WRITING mcnmn;

LPPLIOLTIOI FILED 11]., 1905.

4 aunt's-sans! a.

IN NTD MTREEEES.

In %r I A A's-ATM! P'ATENTED we. 25, 1908.

B. A. BROOKS.

TYPE WRITING MACHINE.

LPPL'IOLTIOI nun 1.4, 1905.

I nus-sum a.

WITNESSES.

' plate 3.

UNITED s'rArEs P ENT OFFICE.

BYRON A. BROOKS, OF NEW YORK, N. Y., ASSIG'NOR TO UNION 'lYPEWRlITER COMPANY, OF

- JERSEY CITY, NEW JERSEY, A CORPORATION OF NEW JERSEY.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Patented Aug. 25, 1908.

Application filed January 4, 1905. Serial No. 239,643.

To all 10. mm it may concern.

Be it known that 1], BYRON A. BROOKS, citizen of the United $tatcs, and resident of the borough of Brooklyn, city of New York, in the county of Kings and State of New York, have invented certain new and useful Im rovements in Type-Writing Machines, of which the followin is a specification.

! My invention re ates to tyvewriting machines and more especially to t e type action of such machines.

One of the objects of the invention is to rovide a series of type bars, each one carrymg a plurality of types, and to connect to each of said type bars a plurality of keys, one for each type, in such manner that if any key be depressed it will impart to the corresponding type bar such a motion as to cause the t pe appropriate to that particular ke to stri the paper.

n the accompanying drawings, Figure 1 is a front view partly in section of a machine in which my invention is embodied; Fig. 2 is a front torear sectional view of said machine; Fig. 3 is a detail view showing a part of the key connections Fig. 4 is a detail view show ing the manner of connecting the different keys with a ty e bar; Fig. 5 is avicw similar to Fig. 2 and s towing a type/bar and its connections in the act of printing from the midfile one of three types; Fig. 6 is a fragmentary transversesectionalvicw on the line .c----a: oiF-ig. 5; Fig. 7 is a view similar to Fig. (l but showing the parts inthe act of rinting from the lower one olthrce types; lcig. h. is a sectional view on the-line yi of Fig. 7,- Fig. t) is a front to rear sectional view of a machine having a prcl'erred'form of my invention enlbodied tlwrcin;'and Figs. 10 and I l are views similar to Fig. 9 but showing the parts in position for printing from the middle type and .thelowcr type respectively.

I have shown my invention applied to a front-strike typewriting machine, or, more spccilica'illy, a three-quarter strike machine; but itwill be understood that the invention is not restricted to this class of machines, but is applicable to typewriters generally.

The mainframe of the machineillustrated in tlic drawings comprises a base portion 1, from which rise posts 2, which support. a top Said top plate has a depressed )ortion '4. Seated within the angles former by the depressed portion 4 of the top plate are two transverse grooved rails fi, the grooves in which lace each other and constitute ball races which cooperate with corresponding hall races l'ormcd in rails which constitute part. of a carriage 6. run in said ball races and support the carriage. The cylindrical platen S has a shaft which is journalcd in theend icces of theearriagc (5. The carriage and atcn'may be fed across the machine by any nown or suitable means.

The form of type action illustrated in Figs. 1--8 will be first described. Ty ebars 9 have a'plurality of types mounted t iereon, three such types being shown in the present case, said types consisting of an outer or end type 10, a middle type 1]. and an inner or lower type 12. The type bars are pivotally mountcd'to strike the platen on the front face thereof at a point approximately thirty degrees above a horizontal-plane through the axis of the platen, but so far as my invention is concerned said type bars might' be arranged to strike the platen at some other point. Each of the type bars is formed at its pivotal end with a circular opening or eye which ,is internally grooved to form a ball race and within said there is situated a disk which is peripherally grooved to form a cooperating ball race. Said disk is mounted by means of a pin 13 between the arms 14 of the forked end of a hanger 15 whichis ivotally mounted at 16 on a hanger 17. ithin the cooperating ball races in the type bar An ti-l'rictio1'i balls 7- The hangers 15 are in effect levers crs 17 are secured by screws 19 to a lixcd segmcnt 20 which lies back of and below the type bar pivots and which is securedby screws 21 to brackets 22 depending from the top plate of the machine. Near their free ends, the han'gers or levers 15 are guided by radial slots 23 (Fig. 1) formed in a fixed segmental plate 24 which is secured to brackets 25 (Fig. 3) which depend from the top plate. The segments 3'2 and 24 are inclined, as shown, at an angle appropriate to the point at which the type are adapted to strike the platen: In the present case thev' incline downward and toward the front of the maforward direction.

chine at an an le of about thirty degrees with the verticaE The type bars are thrown upward and backward to print by push links 26 which arepivoted at 27 to said type bars in front of the type bar pivots. Each of said links lies substantially in the plane of its ty e bar and ektends from its type bar in a ownward and Said links are pivoted at 28 to arms 29 of a series "of sub-levers, each of which is pivoted at 30 to a hanger 31, which is secured by a screw 32 to aiixed scgment 33, which is securedvby screws 34 to hangers 35 which depend from the top late.

Each of the sub-levers has a rearward "extending arm 36 to which is pivoted at 3 the upper end of a pull link 38, the lower end of which is idly mounted on a rock shaft 40,Wl1l0h-6X tends from front to back of the machine. The shaft is journaled'at its rear end in the back plate, which constitutes a part of the base portion 1 of the main frame, and at its forward end said shaft is journaled in a frame piece '41 forming part of the keyboard of the machine.

It will be perceived that when any one of the sub-levers 36, 29 is operated, its link 26 will tendto swin the type bar 9 about its pivot to cause t e t pe to print and the thrust of said link wi also tend .to move thetype bar support orhanger 15 about its pivot,

' the segment.

-" thus movingl the pivoted end of the type bar nearer to t vided means for contro e printing point. I have proling this motion of the ham er in such manner as to cause either one of- 51c three types to strike theplaten. In the present instance threekeys are connected to each type bar, one for each ty e, and the controlling means, for the type ar supports are governed by these keys auto-' matically. Each of the type bar supporting levers 15 has a rearwardly' extendingtarnr42, the free end of which stands in position to engage a stop segment 43 which is supported at its ends bylinks 44, which are pivoted to said segment on shouldered and headed screws 45 which pass loosely through the lower ends of said links and are threaded into The links 44 are pivoted at their upper ends on shouldered and headed screws 46 which are threaded into brackets 47 which do end from the top plate of the machine. ear itsmiddle, said segment is formed witha slot 48 '(Fi g. 6) into which a pin 49 projects from a bracket 50, which is secured by screws -51'to a universal 'bar 52, which is controlled by the keys. Asshown in the present case, the pin 49 consists of the end of a screw which is threaded through the bracket 50. a

AS best shown in Figs. 1, 6 and s, the segment 43 is formed on its inner ed e with a sefies of stepped "stops having t e form of teeth. Said segment normally stands in the pivoted to an arm 39 which is rig l returning spring 60 which is connected at one position shown in Fig. 1 .with the ends 53 of the stepped stops in position to be engaged by the arms 42. If a type bar is operated when the segment stands in this position, the type bar support will be arrested by the sto 53 in position for the end type 10 to stri e the laten. The segment may be shifted by t e universal bar to the position shown in Figs55 and 6, when if a type bar be operated the arm 42 thereof will be. arrested by the second step 54 of the'stepped stop in position for the middle type 11 to strike the platen; or the segment may be further shifted by" the universal bar to the position 'shown in Figs. 7 and 8, when the arm 42.of

the operated type bar will be arrested by the third step .55 in such position that the inner type 12 will strike the platen. Each type barjs controlled by three keys 56,,57 and 58,-

each of which has a vertical stem 59' which is slidabl mounted in one of'the frame pieces ach of the stems 59 is'p'rovlded with a end to said stem and at the other end to the frame piece 41, and the upward motion of said key stem, under the impulse of said spring, s limited by a stop in 61 which e'n- 'ages the frame piece 41. he stem of the y56 has its lower end standing above an' arm 62 which progects from the'rock shaft 40,

and the stems o the keys 57' and 58 have their lower ends standing 'above'arms 63 and 64 respectively, which project from rock shafts 65 and 66, which are mounted the. machine beneath the rock shaft 40 and in the same manner as. said rock shaft. The arrangement of the rock shafts 40, 65 and 66 is similar to thearrangement used in the'smith Premier typewriter. Each of sa1d rock shafts is provided with a returning spring 67.

Asbest shown in Figs. 1 and 4, the rock shaft 66 has projecting therefrom an arm 68 to which is pivoted a'link 69 which is connected with an arm 70 which projects from y the rock shaft 40. The link 69 has an elongated slot in the upper end of which normally rests a pin 71 which projects from the arm 70. The construction 1s=such that if the shaft 66 will be rocked by depressing the ke 58, the shaft 40 willalsobe rocked-throu the arms 68 and 70 and the link 69 but if-t ie' rock shaft 40 be 0 erated by the key. 56, the pin 71 will move i ly in theslot in the lmk 69 Without affecting the rock shaft '66. 4 The rock shaft 65 is connected with the rock sh aft 40 in the same manner as the rock shaft 66 by an arm 72 projecting from'the rock shaft 65, a slotted link 7 3,and an arm 74 which projects from the rock shaft 40. It will be seen that the rock shaft 40 will be operated by the depression of. either of the keys 56, 57 or 58 and that the sub-lever 29', 36 will be operated bythe link 38.

The universal bar 52 has the form of a grid r gate having bars 75, onebar foreach vertical tier of rock shafts, and said bars are formed with projections 76, one for each rock shaft. Said universal bar is slidabl mounted near its ends in brackets 77 an 78 (Fig. 1), which project from the main frame. The universal bar is held in and returned to normal position by a spring 79 which is connected at one end to a pin 80 which rejects from the universal bar, and at the ot er end to a pin 81 which pro'ects from one of the brackets 77. The roc shaft 40 is not provided with any means for moving'the nniver' .sal bar, so that when this shaft is operated by depressing the key 56, the universal bar and segment 43 remain in their normal position with the highest steps 53 of the stepped stops in position to be engaged by the arms 42 of the ty e bar supports. The rock shaft 65 is forme with a se mental lug or projec- 5 8) which, when said rock shaft is operated, enga es the projection 76 of the universal bar an moves said universal bar to the position shown in Fig. 6. This moves the segment 43 so that the steps 54 are in position to be engaged by ,the arms 42 and to arrest the type bar support of the operated type bar in position for the middle type to strike the platen. The rock shaft 66 I is provided with a segmental lug or projection 83 which is similar to the projection 82 of the rock shaft 65, but is of greater radius,

so that when the rock shaft 66- is operated by the key 58, the universal bar is moved far tively, and the corresponding ositionso the .enough to move the third step 55 of the stepped stop into position to arrest the type bar hanger so as to cause the inner type 12 to strike the platen. The projections 82 and 83 are segmental in form, their peripheries being concentric with the rock shafts, so that the motion of the universal bar is made in the firstpart of the motion of.a rock shaft and in the latter part'of the. motion of said shaft the universal bar is stationary.

In Fig. 5 the three positions of the type bar pivot are indicated at a, b and c res ecty'pc bar support are indicater by the dotted lines drawn througl'i said points a, b and c. It will be perceived that the link 26 and the parts which operate said link have to move urther when the type bar pivot is moved to .the position b to print from the type I 1. than when said pivot stands in position a to print from type 16, and, that when the type bar pivot is moved to position 0 to print from type 12, the link 26 and its associated parts have to move still further. In order to effect these motions with the-same depression of the key in each instance, the arms 62, 63 and 64 of the rock shafts 4U, 65 aml 66, stand at different angles, as shown in Figs. 2-and 3, thus leaving different amounts of lost motion between the stems of the keys 56, 57 and 58 and their respective arms. It will be perceived that the segment 43 is shifted transversely of the type bar supports but a short distance for 'causin one oranother of the types of the operatef type bar to print, and that this slight motion of said segment throws but little additional work on the ke s.

As will be understood by reference to ig. 1, the links 26 radiate from a oint near. the printing point in the planes 0 their respective type bars and the sub-levers 29, 26 are alsoarranged in said planes. The links 38 are also substantially in the same planes and radiate from a point near the printing point, so that motion is communicated to the end type bars from the end rock shafts without torsional strain.

The typebar ivots are arranged as usual in the segment o fa circle having its center at or near the printing point. The free ends of said type bars rest on a ad 84 of felt or other suitable material whic is supported by a curved forward portion 85 of the top plate 3.

segment, because the end type bars move in.

paths more nearly horizontal so that the weight of said type bars has to be lifted a less distance against gravity than is the case with the middle type bars. By the present arrangement all of'the type bars start at the same elevation and strike the platen at the same elevation so that the same amount of work due to gravity is done in operating one type bar as is done in operating another. It will be understood that according to this arrangement the path of an end type bar from its normal to its printing positionis somewhat longer than that of a middle type bar. The forward vertical part of the segmental ortion S5 of the top late reaches up to the evel of the types as t iey lie in their normal positions, as shown in Figs. 1 and 2, so that this part of the frame serves as a shield for riage are substantially the same as in the other form and the general arrangement of the type bars and the manner in which said type bars are supported and pivoted aresub stantially the same; but the means for shift ingthe type ba-r supports and the means for operating the ty )0 bars are somewhat modified. The type nirs i) are pivotally mount ed, preferably by ball bearings such as those already described, in hangers or supports 86 which are pivoted at 87 to halwers 88 which g are seeurm which issecuredat its ends by screws 91 to brackets 92 depending from the top late. The type bar supportsitfi are supported and guided at their free ends by a slotted segment 93 which is secured by screws 94 to brackets 95 depending from the to plate. Each of the type bars is operated y a sub-lever 96 which is ivotedat 97 to ahange'r 98, which .is secure( by a screw 99 to a fixed segment 100, which 'is secured byescrews 101 tobrackets 102 depending from the top plate.

. The ty e bars 9 pass loosely through slots 103m t e ends of their respective sub-levers.

Each of said sub-levers has a rcarwardly extendin arm 104 which is connected b a push lmk 105 with an u wardly extem ing arm of a bell crank subever .106 which is pivoted at 107; to a hanger 108. The hangers 108 are secured by screws 109 to a fixed seg- -ment 110 which is secured to brackets 111 which depend from the top plate. Each of the sub-levers 106 has a forwardly extending arm which is connected by a ull link'112 with an arm 113 which projects rom the rock I shaft 114 which is j ournaled at its rear end in the back plate of the base 1 of the machine,

and at its forward end in one of the frame lates 41, which constitute thekeyboard. he rock shaft 114 has'an arm 115 which is connected bya slotted link 116 with an arm 117 whichro'ects from a rock shaft 118 which staii s eneath the rock shaft 114.

Said gp ck'shaft 114 also has projecting there keys 126, .127 and 128 respectively. The

stems of the keys 127 and 128 are pivotally connected with their arms 124, but the stem of the kc 126 is formed with an-open ended slot, as sllown in Fig. 9, which fits over the arm 124 of the rock shaft 114 so that when said rock shaft is o erated by either of the keys127 or 128, the key 126 will not be moved. In order to hold said key in its normal position under these circumstances, it is provided with a returning spring 129 which is connected at one end to the stem'of the key and at the other end to the frame late 41.

The type bar support 86 has the orm of an angle lever, the type bar being mounted on the free end of the forwardly extendin armwill e seen t at the initia and final positions of said lever. The other arm 130 0 said lever extends substantially radially away from the printing point and has projecting from its free end a pin 131 which lays in a cam slot formed in the enl of at ever 132 c5 which is pivoted at 133 to a ranger 134 which lever 132.'

is secured by a screw 135 to a fixed segment 136. Said fixed segment is secured by screws 137 to brackets 138 depending from p rom the center, and these dwells are con-Q nected by inclined portions 142- and 143.

When the pin 13-1 rests in the dwell 139, the

type bar support stands in position for the type 10 to strike the platen, this-bein the normal position of the parts; but if the ever 132 be moved to the position shown in Fig.

10, with the pin 131 in the dwell 140, the type bar support is in position for the middle type 11 to strike'the laten, and if the lever 132 be moved still urther to the position shown in Fig. 11, the parts stand in position for the inner type 12 to strike the laten. The rock shaft 114 is not provided with any means for moving the'lever 132 so that if said rock shaft be operated by depressing its key 126, the type bar will be thrown to the printing point and the type 10 will strike the.

platen.

The rock shaft 118 has arm 144 project ing therefrom, and pivoted to said arm is; a link 145 having an elongated slot 146 formed in its upper end, said slot being concentric with the lever 132. A pin .7 projects from the end of the lever 132 into the slot 146 and said in normally stands at the top of said slot. "he rock shaft 122 has projecting therefrom; an arm 148 to which is'pivoted a link 149 having in its-upper end a slot 150 into-which a pm 151 projects from the through a greater, distance than the link 145. 4

The construction is'such that if the key 127 The pin 151 is nearer to the pivbe depressed, rocking the shaft 118, the link 145 will draw the lever 132 to the position shown in Fig. 10 and the connection 1 15, 1 16, 117 will rock the shaft 114, thus operating the type bar and causing the type 1 1 to strike the platen.- If the key 128 be depressed and the shaft 122 be rocked, the lever 132 will be drawn down to the position shown in Fi 11 by the link 149 and the rock shaft 114 W1 lbe 'o erated by the connection 119, 120, 121, so

t at the ty e 12 will be thrown against the platen. W en the lever 132 is moved by either of the links 145 r 149, the pin 151 or- 147 will move idly in he slot in the other;

link. Any suitable means, such as a spring,

may be provided for restoring the lever 132' to normal position. l

B an ins ection of Fi 9,'10and '11, it

of the sub-lever 96 are the same whether the key 126, 127 or 128 be operated, so that one key is depressed to the same extent as another in order to operate the parts I p a Various changes may be In'ade 111 the dew tails of construction and arrangement without departing from the gist ofmy'several improvements. V

-What I claim as new and desire to secure by Letters Patent, is

1. In a typewriting machine, the combination of a series of type bars, each carrying a V plurality of t pes, a series of movable supports for sai typebars; a series of keys;

a plurality of sai keys being connected to 1 each type bar; a series of rock shafts, one for each ey; means operated by one of said rock shafts for operating a type bar; means operated by other of said rock shafts for operating said first mentioned rock shaft; and

.means 0 erated by the last-named rocktheir pivots arranged approximately in a plane passing throu h the printinipomt and said types bein a apted to stri e against the front face 0 said platen; and a su port for the free, ends of sald type bars, sai supprort being adapted to normally maintain t ee ends of t e several type bars at substantially the same elevation.

3. In a front-strike typewritin the combination of a platen;

machine, ont-strlke type bars se mentally arranged below said bar; a segmenta approximately .through the printing platen and t e plane of the segment passing oint; and'a su port for the free ends of sai type bars, sai support maintaining the free ends of the middle type bars of the series nearer to the printing point than the end type bars.

4. In a typewriting machine, the combination of aseries of type bars each carrying a pluralit of t pes a series of keys, a plurahty of said eys liein connected with each type fiy arranged series of supports for said type bars, each pivoted to a xed art for motion radially toward and from t e printing point; a series of cams for controlling the motion of said supports to cause one or another of the types-on an op- H erated tylpe bar to'print and means whereby 50 certain 0 said keys control said cams.

5. In a typewritin g machine, the combination of a series of type bars each carrying a pluralit of types, a segmentally arranged 'series 0 supports for said ty e bars, each of said supports being mounter to move radially toward and from the printing point; a

.cam 132 for each of said sup orts; a series of keys, a plurality of said keys eing connected with each of said type bars; and means whereby certain of san keys move said cam 132 to cause one or another of the types on i the operated type bar to print, different keys moving said cam diflerent distances.

6. In a typewriting machine, the combination of a series of type bars each carrying a plurality of types; a series of supports for" said ty eb'ars each pivoted toswingsub stantial y in the plane'in which its type bar nloves; a series of cams one controlling each support and each of said cams mounted to other of t e types to print; a series of sublevers pivoted to a stationary segment and each having its pivot oint approximately in a line which extends f iom the printing point through the pivot point of the corresponding type bar, said sub-lever having sliding con-. nection with said typc bar; means for operating said sub-levers and means for controlling said type bar supports.

plurality of types; a series of supports for said type bars each movable toward and' from the printing point; a segmentally arranged scrics of su a-lcvers each pivoted to swing in the plane of its type baron afixcdpivot' which is approximately in the line which extends from the printing point throu h the pivot oint of the corres iondin type bar; a plura ity of keys, one or eae type, connected with each of said sub-levers; and means operated by certain of said keys for controlling said type bar sup ort.

9. In a typewriting machine, t e combination of a series of type bars each carrying a -move in'substantially the same plane as its 8. In a typewriting machine, the combination of a series of type bars each carry ng a plurality of types; a series of keys, a plurahty of said keys being connected with each ty' e bar; a series of horizontal rock shafts one or each key; a scrles of supports for said ty e bars each movable toward and from t e ed and controlling one of said ty e bar supports; a series of sub-levers each raving slidlng connection with .one of said type bars; and a series of keys, a plurality of said keys being connected with each of said sub-levers and certain of said keys being connected with. said cam plates.

1].. In a typewriting machine, the combination of a type bar carrying a plurality of types; a lever pivoted to a stationary so? Si ed at the borough of Manhattan, city 10 'ment and having said ty e bar pivotal y of' Ni iv York, in the county of New York, mounted thereon; a cam pate pivoted to a and State of New York, this 3d day of J anufixed art ofthe machine and having a cam ary, A. D. 4905.

5 slot t lerein' a pin on said lever running in v I said cam slot; and means for moving said BYRON O S cam plate through difierent distances to ad Witnesses: q just said ty e bar su port into position for E. M. WELLS,

one or anot er of sai types to print. J. 'B. DEEvEs. 

